/Engine/Plugins/Runtime/Metasound/Source/MetasoundEditor/Public/MetasoundEditorGraph.h
void IterateVariables ( [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< void([UMetasoundEditorGraphVariable](API\Plugins\MetasoundEditor\UMetasoundEditorGraphVariable) &)> InFunction ) const